package com.drama.outtake.service.impl;

import cn.dev33.satoken.stp.StpUtil;
import cn.hutool.core.bean.BeanUtil;
import cn.hutool.core.lang.UUID;
import cn.hutool.core.util.RandomUtil;
import com.drama.outtake.MyException;
import com.drama.outtake.common.Result;
import com.drama.outtake.dao.UserDao;
import com.drama.outtake.domain.LoginFormDTO;
import com.drama.outtake.domain.User;
import com.drama.outtake.domain.UserDTO;
import com.drama.outtake.service.IUserService;
import com.drama.outtake.util.BeanUtils;
import com.drama.outtake.util.RegexUtils;
import lombok.RequiredArgsConstructor;
import lombok.SneakyThrows;
import lombok.extern.slf4j.Slf4j;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import javax.servlet.http.HttpSession;
import java.util.concurrent.TimeUnit;

import static com.drama.outtake.util.RedisConstants.*;
import static com.drama.outtake.util.SystemConstants.USER_NICK_NAME_PREFIX;

/**
 * @Author : 李先均
 * @Date 2023/3/5 17:07
 */
@Service
@Slf4j
@RequiredArgsConstructor
//public class UserServiceImpl extends ServiceImpl<UserDao, User> implements IUserService {
public class UserServiceImpl implements IUserService {
    private final UserDao userDao;
    @Resource
    private StringRedisTemplate stringRedisTemplate;


    @SneakyThrows
    @Override
    public User updateUserInfo(User user) {
        User oldUser = userDao.getById(user.getId());
        BeanUtils.copyPropertiesIgnoreNull(user, oldUser);
        return userDao.save(oldUser);
    }

    @Override
    public User getMyUserInfo() {
        if (!StpUtil.isLogin()) {
            throw new MyException("未登录，请先进行登录");
        }
        return (User) StpUtil.getSession().get("userInfo");
    }

    @Override
    public Long getMyUserId() {
        return getMyUserInfo().getId();
    }

    @Override
    public Result sendCode(String phone, HttpSession session) {
        // 1.校验手机号
        if (RegexUtils.isPhoneInvalid(phone)) {
            // 2.如果不符合，返回错误信息
            return Result.fail("手机号格式错误！");
        }
        // 3.符合，生成验证码
        String code = RandomUtil.randomNumbers(6);

        // 4.保存验证码到 session
        stringRedisTemplate.opsForValue().set(LOGIN_CODE_KEY + phone, code, LOGIN_CODE_TTL, TimeUnit.MINUTES);

        // 5.发送验证码
        log.info("发送短信验证码成功，验证码：{}", code);
        // 返回ok
        return Result.ok();
    }

    @Override
    public Result login(LoginFormDTO loginForm) {
        // 1.校验手机号
        String phone = loginForm.getPhone();
//        if (RegexUtils.isPhoneInvalid(phone)) {
//            // 2.如果不符合，返回错误信息
//            return Result.fail("手机号格式错误！");
//        }
        // 3.从redis获取验证码并校验
        String cacheCode = stringRedisTemplate.opsForValue().get(LOGIN_CODE_KEY + phone);
        String code = loginForm.getCode();
        if (cacheCode == null || !cacheCode.equals(code)) {
            // 不一致，报错
            return Result.fail("验证码错误");
        }

        // 4.一致，根据手机号查询用户 select * from tb_user where phone = ?
        User user = userDao.findByPhone(Long.valueOf(phone));

        // 5.判断用户是否存在
        if (user == null) {
            // 6.不存在，创建新用户并保存
            user = createUserWithPhone(phone);
        }

        // 7.保存用户信息到 redis中
        // 7.1.随机生成token，作为登录令牌
        String token = UUID.randomUUID().toString(true);
//        // 7.2.将User对象转为HashMap存储
        UserDTO userDTO = BeanUtil.copyProperties(user, UserDTO.class);
//        Map<String, Object> userMap = BeanUtil.beanToMap(userDTO, new HashMap<>(),
//                CopyOptions.create()
//                        .setIgnoreNullValue(true)
//                        .setFieldValueEditor((fieldName, fieldValue) -> fieldValue.toString()));
        // 7.3.存储
        String tokenKey = LOGIN_USER_KEY + token;
        stringRedisTemplate.opsForValue().set(tokenKey, userDTO.toString(), LOGIN_CODE_TTL, TimeUnit.MINUTES);
//        stringRedisTemplate.opsForHash().putAll(tokenKey, userMap);
        // 7.4.设置token有效期
//        stringRedisTemplate.expire(tokenKey, LOGIN_USER_TTL, TimeUnit.MINUTES);

        // 8.返回token
        return Result.ok(token);
    }

    private User createUserWithPhone(String phone) {
        // 1.创建用户
        User user = new User();
        user.setPhone(Long.valueOf(phone));
        user.setName(USER_NICK_NAME_PREFIX + RandomUtil.randomString(10));
        // 2.保存用户
        userDao.save(user);
        return user;
    }
}
